Step 1: Understanding Red Oxide
Red oxide is a pigment commonly used in paints and coatings.
It has a deep, earthy red tone and is widely used in construction, art, and design.
Step 2: Red Oxide's visual match
Red oxide pigment is chemically ferric oxide (Fe$_2$O$_3$).
Its natural tone closely resembles a muted red, often called "Indian Red."
Step 3: Evaluating options
(A) European Red $\Rightarrow$ This is not a standard pigment name.
(B) Indian Red $\Rightarrow$ Matches perfectly in tone with red oxide pigment.
(C) France Red $\Rightarrow$ Not a recognized standard for red oxide pigment.
(D) None of these $\Rightarrow$ Incorrect, as Indian Red is a valid match.
Conclusion:
Red oxide pigment best matches with Indian Red colour.
\[
\boxed{\text{Correct Answer: (B) Indian Red colour}}
\]
Find the unknown frequency if 24 is the median of the following frequency distribution:
\[\begin{array}{|c|c|c|c|c|c|} \hline \text{Class-interval} & 0-10 & 10-20 & 20-30 & 30-40 & 40-50 \\ \hline \text{Frequency} & 5 & 25 & 25 & \text{$p$} & 7 \\ \hline \end{array}\]
Two concentric circles are of radii $8\ \text{cm}$ and $5\ \text{cm}$. Find the length of the chord of the larger circle which touches (is tangent to) the smaller circle.